复式汽车库自喷系统水力计算探讨

Discussion on the hydraulic calculation of composite garage sprinkler system

综合现行相关规范及措施要求,对复式汽车库自喷系统水量计算进行分析。通过"压力平衡试算法",依据节点压力、流量平衡原理,对自喷系统水量进行精准计算,将计算结果与目前常用的两种自喷水量估算值对比分析。结果表明,"下层喷头流量直接叠加法"存在的偏差较大,不适合用作复式汽车库自喷系统水量估算;"侧喷喷头替代法"误差较小,修正后可用于估算。利用对"压力平衡试算法"过程值分析,总结出"侧喷喷头替代法"误差修正参数,为便捷、准确计算复式汽车库自喷需要水量提出了较为合理的方案,希望能对同类工程设计者提供参考。

Combing with the existing tion calculation of composite garage standard, the water consump sprinkler system was studied By pressure balance test algorithm, and according to the principle of balancing the mode pressure and flow, the water consumption of sprinkler system was calculated, and compared with the two currently used estimated values of sprinkler. Results showed that, direct flow stack addition of lower nozzle has bigger error, and is not suitable for the water consumption estimation, while the method of side nozzle replacement has smaller error, and can be used in the estimation after correcting. By analyzing the process value of the pressure balance test algorithm, the error correction parameters of the side nozzle replacement method were summarized, to provide plan for the calculation of composite garage sprinkler system water consumption, hoping to help the similar engineering designers.